.>>thankstopresidentobamaforthe confidence -- >> reporter: david petraeus no longer heads the cia, but he's volunteered to testify this week to congressional benghazi hearings as new details emerge about the e-mails that helped end petraeus' career. >> he's provided this country an extraordinary service. >> reporter: speaking for the first time about the scandal wednesday, president obama praised petraeus for extraordinary service saying he's seen no signs of a national security breach over the course of the investigation. >> i have no evidence at this point from what i've seen that classified information was disclosed that in any way would've had negative impact on our national security. >> reporter: republican senators brushed off that scandal calling the attack on benghazi far more important. >> there's the weird and the strange and the human failings in one camp. and there is a legitimate question about national security being breached in the other camp. >> reporter: meanwhile, paula broadwell remained at her brother's home in washington on wednesday still not talking. but off